The aim of this study for low and standard risk germ cell tumor (GCT) patients is to minimize toxicity by reducing therapy while maintaining current survival rates. The trial will eliminate chemotherapy for low risk patients who are likely cured with surgery and will observe the salvage rates among those who recur.

The purpose of this study is to determine the association of one or more fall-risk assessments tools and joint ROM data to fall, near fall, injurious fall, and fear of falling in the hemophilia population

This study aims to define new forms of diabetes that are not yet understood. Participants will be asked to provide medical and family history and may be asked to have clinical lab testing performed.

Develop a set of effective little cigar and cigarillo warning statements.

The purpose of this research study is to understand how the management of Patient Reported Outcomes (PROs) could help improve surgical care for patients undergoing chest surgeries. PROs are symptoms directly reported by patients through the completion of a survey.

To study the how well Pembrolizumab works on advanced tumors

The purpose of this study is to implant abnormal human parathyroid glands into mice to be used to test agents that might allow better imaging of parathyroid glands. This may improve the surgery that is sometimes required for abnormal parathyroid glands.

The purpose of this study is to follow patients who were diagnosed with HIV-1 infection during this acute infection stage to look at clinical and laboratory markers of HIV infection, over time. Individuals joining this study may or may not be on treatment for their HIV. No treatment is provided in this study. Participants may be asked to provide blood samples on this study.

The purpose for this research study is to learn more about PCD through the creation of a secure electronic clinical registry. Through this registry, researchers will be able to follow people living with PCD over time to learn more about how PCD affects people's health and the treatment people take.

To evaluate the feasibility and acceptability of a novel psychosocial intervention for parents with advanced cancer and their co-parents.